Detecting the neutrino mass via the cross-correlation between matter tracers and the ISWRS effect?
This research explores detecting neutrino mass (Mν) by cross-correlating Cosmic Microwave Background (CMB) experiments with Large Scale Structure (LSS) surveys to find the nonlinear Integrated Sachs Wolfe effect (ISWRS). The ISWRS signal, caused by massive neutrinos suppressing structure growth, is reconstructed using galaxy clustering and cosmic shear data. Realistic forecasts suggest detection is possible with next-generation instruments like CMB-HD and LSST, potentially constraining Mν to be greater than 0.12 eV.